Floor cleaning device



FIG. 1 is a front, top and left side perspective view of a floor cleaning device showing the new design;

FIG. 2 is a front, top and right side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a top plan view thereof.

The broken lines shown in the figures are included for purposes of illustrating portions of the floor cleaning device and form no part of the claimed design. 

CLAIM The ornamental design for a floor cleaning device, as shown and described. 